From: Secunia Security Advisories (sec-advsecunia.com)
Date: Wed Nov 14 2007 - 14:17:04 CST

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TITLE:
Linux Kernel CIFS "SendReceive()" Buffer Overflow

SECUNIA ADVISORY ID:
SA27666

VERIFY ADVISORY:
http://secunia.com/advisories/27666/

CRITICAL:
Less critical

IMPACT:
DoS, System access

WHERE:
From local network

OPERATING SYSTEM:
Linux Kernel 2.6.x
http://secunia.com/product/2719/

DESCRIPTION:
A vulnerability has been reported in the Linux Kernel, which can be
exploited by malicious people to cause a DoS (Denial of Service) or
potentially compromise a vulnerable system.

The vulnerability is caused due to the "SendReceive()" function in
fs/cifs/transport.c assuming wrong buffer sizes. This can be
exploited to cause a buffer overflow by sending specially crafted
responses to a vulnerable system.

Successful exploitation may require that a malicious server is used
to mount a CIFS share.

The vulnerability is reported in version 2.6.23. Other versions may
also be affected.

SOLUTION:
Fixed in the GIT repository.
http://git.kernel.org/?p=linux/kernel/git/sfrench/cifs-2.6.git;a=commit;h=133672efbc1085f9af990bdc145e1822ea93bcf3

PROVIDED AND/OR DISCOVERED BY:
Przemyslaw Wegrzyn

ORIGINAL ADVISORY:
http://marc.info/?l=linux-kernel&m=119455843205403&w=2

http://git.kernel.org/?p=linux/kernel/git/sfrench/cifs-2.6.git;a=commit;h=133672efbc1085f9af990bdc145e1822ea93bcf3

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